betadisper
On Thu, 2013-05-09 at 14:50 +0000, SILVIA CALVO ARANDA wrote:
Dear all I'm using betadisper () to evaluate if geographical and historical heterogeneity differ statistically between two archipelagos. I have not problems in obtaining the results for the geographical hypothesis (computing the Euclidean distance between UTM centroids of each island), but for the historical hypothesis the following message appears: Error en vectors[, want, drop = FALSE] %*% diag(sqrt(abs(eig))) : argumentos no compatibles
Assuming I translate that correctly, it means `vectors[, want, drop = FALSE]` and `diag(sqrt(abs(eig)))` have dimensions that do not match ofr the requirements of the matrix multiplication operation. Can you send me the data and code you are using - **off list** - and I'll take a look and see what is going wrong? G
I calculate the historical triangular matrix computing the Euclidean distance between the oldest geological age of each island (all of them are from volcanic origin). I've also tried calculating just the difference in mya between all pairwise comparisons of islands, which gives basically the same results (but with different scaling). Can anybody help me with this problem? Thank you in advance Silvia [[alternative HTML version deleted]]
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